The transfer window at this time of year can be like a game of dominos, with one deal triggering a series of reactions.

Bristol City defender Aden Flint is reportedly wanted by four Championship clubs, Birmingham City, Norwich City, Fulham and Middlesbrough, but none of those sides are putting all their eggs in one basket.

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Ryan Shotton's move to Middlesbrough from Birmingham for reportedly £3m has been confirmed today.

Ryan Shotton of Birmingham City slides in to win the ball from Ayoze Perez of Newcastle United

Boro's bid for Shotton was accepted three weeks ago but Birmingham did not want to let their man go until they had a replacement lined up. That deal could potentially end Middlesbrough's muted interest in Flint.

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Birmingham City have themselves been actively pursuing a number of defenders to replace Shotton, with Flint one of their main defensive targets - but he is proving too pricey for Harry Redknapp's liking.

Harlee Dean of Brentford and Craig Conway of Blackburn Rovers confront each other

However, Harlee Dean of Brentford looks likely to be joining the Blues for £2.5m, according to the Birmingham Mail. That could mean the Blues have all the defenders they need.